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torisob [31]
3 years ago
15

Isaac invested $1,800 in an account paying an interest rate of 4.7%

Mathematics
2 answers:
bazaltina [42]3 years ago
7 0

Answer:

$3584.86 or 3600 if rounded to the nearest 100 dollars

Step-by-step explanation:

1800(1.047)^15= 3584.86

you can plug this into a calculator

s344n2d4d5 [400]3 years ago
7 0

Answer:

3600

Step-by-step explanation:

\text{Compounded Continuously:}

Compounded Continuously:

A=Pe^{rt}

A=Pe  

rt

 

P=1800\hspace{35px}r=0.047\hspace{35px}t=15

P=1800r=0.047t=15

Given values

A=1800e^{0.047(15)}

A=1800e  

0.047(15)

 

Plug in

A=1800e^{0.705}

A=1800e  

0.705

 

Multiply

A=3642.92403286

A=3642.92403286

Use calculator (with e button)

A\approx 3600

A≈3600

Round to nearest hundred dollars

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Step-by-step explanation:

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6. Anna can walk 10 miles in 4 hours. At this rate, how many minutes does it take her to walk one mile?
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Answer:

<h3>Question 1</h3>

<u>Function given:</u>

  • y = x² + 4x - 4

<u>In the vertex form:</u>

  • y = x² + 4x + 4 - 8 = (x + 2)² - 8

Axis of symmetry is the vertical line passing through the vertex.

<u>The vertex is</u>

  • (-2,-8)

<u>Axis of symmetry is </u>

  • x = -2

<u>y- intercept is </u>

  • x = 0 ⇒ y = -4, so the point (0, -4)

<u>Two other points are</u>

  • x = 1 ⇒ y = (1 + 2)² - 8 = 9 - 8 = 1, the point is (1, 1)
  • x = -1 ⇒ y = (-1 + 2)² - 8 = 1 - 8 = -7, the point is (-1, -7)

<em>See the graph with all the points plotted</em>

<h3>Question 2</h3>

<u>Function given:</u>

  • y + 2x² - 4x - 6 = 0

<u>In standard form:</u>

  • y = -2x² + 4x + 6

<u>In vertex form:</u>

  • y = - 2x² + 4x - 2 + 8 = -2(x - 1)² + 8

<u>The vertex:</u>

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<u>Axis of symmetry is </u>

  • x = 1

<u>y - intercept </u>

  • x = 0 ⇒ y = -2(-1)² + 8 = -2 + 8 = 6, the point is (0, 6)

<u>Two other pints:</u>

  • x = -1 ⇒ y = -2(-1 - 1)² + 8 = -8 + 8 = 0, the point is (-1, 0)
  • x = 2 ⇒ y = -2(2 - 1)² + 8 = -2 + 8 = 6, the point is (2, 6)

<em>The graph is attached with the points plotted.</em>

3 0
3 years ago
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